Control valve and booster for lubricant nozzles



Dec. 25, 1951 J. J. PACEY 2,579,754

CONTROL. VALVE ANO BOOSTER FOR LUBRIOANT NOzzLEs Filed nec. 12, 195o INVENTOR JOHN J. PACEY A'T TORNEVS Patented Dec. 25, 1951 UNITEDI STATES? PATENT, `OFFICE CONTROL VALVE ANDBOOSTER'FOR LUBRICANT NOZZLES John J. Pacey, Springfield, Mass.,` assigner to Gilbert & Barker Manufacturing Company; West Springfield,y Mass., acorporaticn of Massachusetts Application. December '12, 1950,V Serial No. 200,465

5 Claims.

` This` invention relates of. lubricant-receivingv tt'ings of automotive vehicles.

` The invention has for one object the provision I against its seatfto close the inletpassage 9.

The upper endofstem I4 has a guide I1, which in a nozzle of the class described `of improved I actuating means for the shut-01T valve of the` nozzle adapted for easy manual Voperation in u opening the valve against the very high pressure,

acting to hold it closed, andin holding the valve open during dispensing.

The inventionhas for anotherobject the promeans within the nozzle actuated by` the same means which lactuates the. shut-oir. valve and coincidentallywith the opening movement of "such valve.

The invention will be disclosed with reference `is slidably engagedwith thejwall of passage 6 rand has slabbed oi sides as `shown in Fig. 3

to'lperrnit lubricantto ow past it.v This guide Il has a transverse slot I8 through it. The upper wall 1 I3 of this` slot forms a cam, `which is inclined at an acute angle to a plane passing through the axis of the portion Il at right angles thereto and which `is` adapted to be actuated under manual control by means to be later described.

Communicating with passage anddiverging ltherefrom at an acutel angle is a passage 20,

.15 vision in a nozzle of the class described of booster which connectslatV one end with a `.passage 2I Hand the `latter in turn connects with one end of a threadedfpassage 22 which extends diametril cally across the lateral `projection 3- and -receives to the one illustrative exampleof vit shown in the accompanying drawings, in which:

i Fig. 1 is a sectional elevational view of a lubricantnczzle embodying the invention; `and Figs. 2, 3, and 4 are cross sectional views taken on' the lines 2-'2, 3-3 and 4-4,.respectively,

of Fig. l.

Referring `to these drawings, the controlvalve includes a body member I, -having a hand grip a threaded nipple 23. At the'junction 'of passages Zand 2l isa seat which is engaged by av ball valve 24, held closed by a spring '25,.acting against ari-'annular retaining nut 26, threaded -into the vinner end `of passage 22.- Thisvalve lopens in the direction of the outflow of lubricant. In the `nipple 23 is a ball check valve 21, held closed by a spring 28, acting against an annular retaining washer .2s held inf place by portion 2 and an integral lateral projection 3. Y.

The portion 2 islongitudinally bored forming passagesd, 5 and liof progressively decreasing diameter and an interiorlyi threaded portion 'I- at the outer end of passage 4. Seated on the shoulder, formed at the intersection of the paswhich is threaded into portion 'I and is ,itself `:threaded to adapt it forconnection to a` supply ksages 4 and 5, is a washer 8 having a passage 9 therethrough, surrounded by a valve seat adapted for engagement` with the ball inletvalve I0. Washer 8 is clamped to its s'eat by anipple II,

Ill, and heldthereto by a lock nut I5. -Thisguide A his s'lidably engaged with the Wallofpassage 5 f and has slabbed off 4sides as shown in Fig. 4. to

permit lubricant to now past it.` A spring I6 in passage 5 is seated at one end on the shoulder formed by the intersection ofpassages 5 and 6 and at the other end engages the nut I5,.forcing the latter andhead I3 downwardly andpressingvalve the inner endof an outlet tube 33, which end .is threaded. into nipple 23 On thev other end of tube 33 is anozzleror-coupling 3| of any suitablekind for engagement, one atatime, with u lubricant nipples to be serviced. The nozzle, tube and nipples II and.23 and thetmember I are considered `as the body of thedevice.

The inletv valve `It is adapted to be opened by the inner end 3I .of a pin 32 which is mounted for longitudinal sliding movement in the lateral projection 3. W The pin 32 spans the passage 22 and the `inner end 3I enters slot I8 and engages cam I9. As the pin is thrust inwardly, its inner end 3l, acting on cam I9, raises stem I4 and allows valve 13 to be opened by the pressure of the lubricant supplied to passage 3. vA :seal 33 surrounds pin 32 and is heldin place under compression by a gland nut 34 threaded into the projection 3. The outer end of pin 32 lies in a Arecess 35 in the outer end of projection 3 in the path of the inner end of an actuating screw 3e which is adjustably mounted in a hand lever 3l near its fulcrum. As shown, screw 36 is threaded intoa nut 38, welded to the inner face of lever 3l, andl a lock nut 33 is provided on the outer end o1 the screw to hold it in its various positions of adjustment. The lever has parallel side anges .40.(Fig. 2.) which lie: one adjacent each of the two iiat faces 4l formed on lthe exterior of projection 3 and a bolt 42 passes through these flanges and the `projection forming the fulcrum of the lever. The lever 31 extends away from the fulcrum in the same general direction as the hand grip portion 2"'and may be manually drawn toward portion 2 to open the valve.

That portion of pin 32, which is of larger diameter and which extends into the passage 22 between the two longitudinally-spaced check valves 24 and 21, is considered as a displacement portion because as it moves inwardly (to the right as viewed in Fig. 1) into passage 22 it will displace some of the lubricant and expel it through the second check valve 21. By this arrangement a booster action is effected coincidentally with the opening of the inlet valve l0.

In use, lubricant is supplied under suitable pressure, which may for example be 2000 pounds per square inch, to the inlet end 'of nipple Il. l The normal condition of the device is that all g 'the described passages, which togetherin eiiect constitute a single passage interconnecting the inlet and outlet of the body, are iilled with lubricant, the inlet valve i is closed, and pin 32 andl handle 31 are in the retracted positions illustrated. The lubricant will be under substantially atmospheric pressure except in the passages l2 and 9. In operation, the operator holds the device by the hand grip portion 2 with his lingers engaging the lever 31. The coupling 3| is then applied to a lubrication fitting, to be serviced, and pressure is applied to handle 31 to open valve I0. As soon as this valve opens slightly, the lubricant is placed under a heavy pressure commensurate with that of the supply,

augmented if need be by the booster action which occurs in passage 22 during the inward movement of pin 32 to open the valve |0112 If the lubrication iitting is plugged, then the pres- Vsure can be built up much higher until the plugged fitting is opened and, in the instant case, to a limit of about 5000 pounds per square inch. The one handle actuates both the shutoi valve and the booster.

The invention thus provides an improved con- -trol valve for lubrication nozzles with an improved actuating means for the shut-off valve of the nozzle and with an improved boosterl operated by the actuating means coincidentally with the opening movement of the shut-off valve.

VWhat is claimed is:

l. A lubricant control valve, comprising a body fhaving a passage therethrough with an inlet adapted for connection to a supply of lubricant under pressure and an outlet for delivery of the lubricant, a valve in said passage near the inlet, rst and second check valves in said passage at longitudinally spaced locations between said first-named valve and outlet, both said check valves opening only in the direction of flow of the lubricant through said passage and the second check valve being located nearer the outlet than the rst check valve, means for controlling the rst-named valve including a reciprocable member crossing said passage at a location between said check valves and movable in one direction to cause the opening of the :firstnamed valve and in an opposite direction to cause closing of such valve, said member having thereon a displacement portion, said member when moved in the first-named direction moving said displacement portion to displace lubricantl from that portion of the passage between the check valves and expel it through the second check valve to boost the pressure of the lubricant delivered through said outlet.

2. A lubricant control valve, comprising a body having a passage therethrough with an inlet f adapted for connection to a supply of lubricant under pressure and an outlet for delivery of the lubricant, a valve seat in said passage near the inlet, a valve cooperating with said seat, a member slidable in said passage and engageable with said valve, a spring acting on said member and tending to hold said valve engaged with said seat, ay stem fixed to said member and located in said passage, said stem having therethrough a transverse slot one end Wall vof which forms a cam, a rod slidable in said body in a direction laterally of the axis of the valve stem with its inner end engaged with said cam, and a hand lever mounted on said body outside the same and engaging the other end of said rod for moving -the latter inwardly and by coacting with said cam to move said stem and member against the force of said spring to permit said valve to open.

l 3. A lubricant control valve, comprising a body having a passage therethrough with an inlet adapted for connection to a supply of lubricant under pressure and an outlet for delivery of the lubricant, an inlet valve in said passage near the inlet end thereof, lirst and second check valves in said passage at longitudinally-spaced locations between said first-named valve and outlet, both said check valvesV opening only in the direction of flow of the lubricant through said passage and the second check valve being located nearer the outlet than the i'lrst check valve, a stem controlling the opening and closing of said inlet valve and having a transverse slot one end wall of which .forms a cam, a rod slidable in the body in a direction laterally of the axis of said stem and crossing said passage at a location between said check valves, the inner end of said rod engaging said cam and operable when moved inwardly to move said stem and permit the inlet valve to open, a hand lever mounted on the body exteriorly thereof for moving said rod inwardly, said rod having a displacement portion movable when the rod is moved inwardly to displace lubricant from that portion of the passage between the check valves and expel it through the second check valve to boost the pressure of the lubricant delivered through said outlet.

4. A lubricant control valve, comprising a body having av passage therethrough with an inlet adapted for connection to a supply of lubricant under pressure and an outlet for delivery of the lubricant, said passage including a rst straight section extending inwardly from the inlet toward an end wall of the body but terminating short of such end and a second straight section extending from the first section at a location intermediate the ends thereof diverging from the iirst section at an acute angle to the axis of the latter, the iirst section of the passage having a valve seat therein near said inlet, a valve cooperating with said seat, a stem controlling the opening and closing of the valve and extending through the rst section of the passage and terminating with a cam located in that portion of the first sectionwhich lies beyond the point of intersection of the second section therewith, a rod slidable in said body crossing the second section of the passage and extending into said portion Voi' the iirst section with its end engaging said cam, a hand lever mounted on said body exteriorly thereof for moving said rod inwardly against the cam to move said stem in a direction to enable the opening of said valve, and a spring acting to hold said valve closed and move the rod outwardly.

5. A lubricant control valve, comprising a body having a passage therethrough with an inlet adapted for connection to a supply of lubricant under pressure and an outlet for delivery of the lubricant, said passage including a first straight section extending inwardly from the inlet toward an end wall of the body but terminating short of such end and a second straight section extending from the rst section at a location intermediate the ends thereof diverging from the rst section at an acute angle to the axis of the latter, the first section of the passage having a valve seat therein near said inlet, a valve cooperating with said seat, a stem controlling the opening and closing of the valve and extending through the rst section of the passage and terminating with a cam located in that portion of the first section which lies beyond the point of intersection of the second section there- 'With, a rod slidable in said body crossing the second section of the passage and extending into said portion of the first section with its end engaging the cam, a hand lever mounted on said body exteriorly thereof for moving said rod inwardly against the cam to move said stem in a direction to enable the opening of said valve, first and second check valves in the second section f said passage and on opposite sides of said rod, said check valves opening only in the direction of outIioW of lubricant and the second check valve being nearer the outlet than the nrst check valve, said rod having thereon a displacement portion, said rod when moved inwardly moving said displacement portion to displace lubricant from that portion of the passage between the check valves and expel it through the second check valve to boost the pressure of the lubricant delivered through said outlet.

JOHN J. PACEY.

Name Date Farrell Mar. 27, 1951 Number 

